摘要
通过对特定实验得到的数据进行建模分析,以不确定度的方式评价在线校准的可靠性。得到结果为U=0.62%(k=2),略大于电磁流量计本身的最大允许误差±0.5%,叠加后的示值误差的可靠性区间为(-1.12%~1.12%)。由此说明,在线校准的方式基本满足其常规使用时的±2%误差限要求,具备较强可靠性。
Through modeling and analyzing the data obtained from specific experiments,the reliability of online calibration is evaluated by uncertainty.The result is U=0.62%(k=2),which is slightly larger than the maximum allowable error of electromagnetic flowmeter itself±0.5%.The reliability range of indication error after superposition is(-1.12%-1.12%).Therefore,the on-line calibration method basically meets the requirement of±2%error limit in normal use,and has strong reliability.
作者
窦华
吴辉
李月童
刘敦利
Dou Hua;Wu Hui;Li Yuetong;Liu Dunli(Sinopec Tahe Refining&Chemical Co.,Ltd.,Kuche Xinjiang 842000;Institute of Metrology and Testing in Uygur Autonomous Region,Urumqi Xinjiang 830011)
出处
《现代工业经济和信息化》
2020年第8期82-83,共2页
Modern Industrial Economy and Informationization
基金
国家质量基础的共性技术研究与应用专项(2017YF F0206303)。
关键词
电磁流量计
在线校准
可靠性
扩展不确定度
electromagnetic flowmeter
online calibration
reliability
expanded uncertainty